Implicit discontinuous finite element flow field simulation method for efficiently assembling Jacobian matrix

The invention relates to the field of discontinuous finite element flow field simulation, in particular to an implicit discontinuous finite element flow field simulation method for efficiently assembling a Jacobian matrix, which comprises the following steps: acquiring a fluid mechanics control equation and boundary conditions for a three-dimensional wing viscous streaming process; performing mesh generation on the flow field calculation area; the fluid mechanics control equation is converted into a discontinuous finite element semi-discrete equation, and a sparse linear equation set is obtained; coloring the unit boundaries, and setting the unit boundaries with different colors into different groups; obtaining a Jacobian matrix of the discontinuous finite element semi-discrete equation; solving the sparse linear equation set, and updating a flow field variable to carry out time marching; obtaining a flow field simulation result of the viscous streaming process of the three-dimensional wing until a flow field